Spark-arrester.



PATENTED SEPT. 1, 1903.

H. S. WAINWRIGHT. SPARK ARRESTER.

APPLICATION FILED MAY 19, 1902".

8 SHEETS-SHEET 1.

N0 MODEL.

lll jtnesses No. 737,800. PATENTED SEPT. 1, 1903. H. S. WAINWRIQHT. SPARK ARREfiTBR.

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PATENTED SEPT. 1, 1903.

H. S. WAINWRIGH'I'. SPARK ARRESTER.

APPLICATION I'ILBD MAY 19, 1902.

3 SHEETS-SHEET 3.

N0 MODEL.

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Patented September 1, 1903.

PATENT OFFICE.

HARRY SMITH \VAINWRIGH'I, OF ASI'IFORD, ENGLAND.

SPARK-ARRESTER.

.ZEEGIFXCATIOII forming part of Letters Patent N 0. 737,800, dated September 1, 1903.

Application filed May 19, 1902.

To all whom it 711,07, concern.-

Be it known that I, HARRY SMITH \VAIN- WRIGHT, a subject of the King of Great Britain and Ireland,residin g at Ash ford, in the county of Kent, England, have invented Improvements in Spark-Arresters, of which the following is a specification.

According to this invention I provide in the smoke-box of a locomotive-engine a spark arrester of truncated conical or other tubelike form which may be constructed by winding a wire or rod or wires or rods spirally around a notched or recessed framework, as described in the specification of my applica= tion for Letters Patent, Serial No. 80,703, dated October 31, 1901, this spark-arrester being mounted with its smaller end upon a suitable support provided around the upper part of the blast-pipe, while the upper part of the spark-arrester extends to and is entered by the base of the chimney in such manner as to inclose or surround the petticoat or chimney-cone, which is located partly within the sparkarrester and partly within the chimney-base. For the purpose of further breaking up small cinders I may provide the chimney-cone with external surfaces that are radially and outwardly slightly upwardly inclined. Such surfaces maybe formed by making the cone of one or more round rods'or wires wound spirally either on a plain core or on a framework, as hereinafter described, or of corrugated metal.

Figure 1 of the accompanying drawings shows in vertical central section so much of the smoke-box of a locomotive-engine, with accessories, as is needful to illustrate my invention by way of example and Fig. 2 is a similar view of another example. Fig. 3 is a plan corresponding to Fig. 2, and Fig. 4 is a vertical section of a chimney-cone.

a is the smoke-box; b, the blast-pipe; c, the spark-arrester, which is of upwardly-in creasing diameter; d, the chimney-cone,which is of upwardly-decreasing diameter, and c the chimney-base.

In each of the examples illustrated the sparlcarrester is constructed as described in my aforesaid specification and comprises up per and lower rings f and g, notched or recessed bars 7L, connecting the rings f and gto- Serial No. 108,081. (No model.)

gether, and round thick wires or rods 1', connected to the rings f and g and engaging in the notches or recesses of the bars h. The rings f and g, the notched or recessed bars 7a and the outwardly and upwardly inclined under surfaces of the round wires or rods i tend to arrest and throw down sparks and glowing particles. Unlike the spark arresters described in the aforesaid specification, the arrester 0 extends upward to the chimney-base e and is entered by and so incloses the said chimney-base, in the example shown in Fig. 1, by completely surrounding it. The chimney-cone d (shown in Fig. 1) is formed of round thick wires or rods j, wound spirally upon a framework composed of two rings 7.: and Z and notched or recessed bars m, in the notches or recesses of which the wires or rods j engage. The slightly radially and upwardly inclined outer portions of the under surfaces of the round wires or rod s jtend to arrest and break up cinders coming into contact with them. The wires or rods of the spark-arrester and the chimney-cone are wound spirally in the same direction. Each of the spark-arresters shown is secured in position on the blast-pipe b by hook or wing bolts n, which are capable when slackened of angular movement about their axes and which when in use hold the spark arrester in position by overlapping parts of the framework of the spark-arrester, whereas release of the spark-arrester for removal can be readily effected by slackening the bolts n and turning them about their axes sufficiently to disengage them from the said framework. The bolts are shown extending through flanges 0 and p of the blastpipe I) and of a blower-ring q, mounted thereon. There may be one or more of such bolts.

here necessary, portions of the spark-arrester may be omitted to accommodate fittings, such as steam-pipe connectionsas, for

example, when applying my invention to eX isting enginesand in such cases also the general formation, so long as the arrester re mains tube like, may be varied as may be necessary to accommodate the spark-arrester to the circumstances of the particular case, there being instances in which by reason of the relative dimensions the truncated co11- ical form, if adhered to throughout, would make the internal diameter insufiicient to accommodate the base of the petticoat or chimney-cone.

By the term tube-like as applied to. a spark-arrester I mean a spark-arrester whose general form is that of atube,whether conical or not and whether it be composed of framework and rod or wire or otherwise constituted, so as, on the one hand, to allow gases to flow from the smoke-box through its wall toward the chimney and, on the other hand, to ob struct the flow of sparks or glowing particles toward the chimney.

Figs. 2 and 3 show an example of apparatus according to this invention in which to accommodate a steam-pipe 11* some of the notched or recessed bars h of the spark-arrester are made shorter than others,and in the upper portion of the arrester the spiral wires or rods are wound only partially around, so that, although inclosed, the chimney-base is only partially surrounded by the spark-arrester, which it enters.

Fig. 4 shows a chimney-cone made of corrugated metal. The lower surfaces of the corrugations (1* serve to break up cinders.

It will be evident that the constructions described may be variously modified without departing from the essentials of the invention and that parts of the invention can be used without other parts thereof.

What I claim is 1. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and into whose upper end said chimney-base enters, and a chimney-cone located partly within said spark-arrester and partly within said chimney-base.

2. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tubelike spark-arrester of upwardly-increasing diameter which is located above said blast-pipe and into whose upper end said chimney-base enters, and a chimney-cone of upwardly-decreasing diameter and located partly within said spark-arrester and partly within said chimney-base.

3. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like sparkarrester of upwardly-increasing diameter which is located above said blast-pipe and is entered by said chimney-base, and a chimney-cone of upwardly-decreasing diameter and having one or more external radially and outwardly slightly upwardly inclined surfaces adapted to break up cinders.

4. In alocomotive'engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester of upwardly-increasing diameter which is located above said blast-pipe and is entered by said chimney-base, and a chimney-cone which is of upwardly-decreasing diameter and is located partly within said spark-arrester and partly within said chimney-base and has external surfaces that are slightly inclined radially and outwardly and are adapted to break up cinders.

5. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester of upwardly-increasing diameter which is located above said blast-pipe and is entered by said chimney-base, and a chimney-cone located partly within said chimney-base and partly within said spark-arrester and comprising spirally-arranged rod or wire having one or more slightly upwardly and outwardly inclined under surfaces adapted to break up cinders.

6. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester of upwardly-increasing diameter which is located above said blast-pipe and is entered by said chimney-base, and a chimney-cone of upwardly-decreasing diameter, located partly within said spark-arrester and partly within said chimney-base, and composed of a framework com prising notched or recessed bars and wire or rod wound spirally thereon and within the notches or recesses thereof.

'7. In a locomotive-engine, the combination of a blastpipe, a chimney-base, a tube-like spark-arrester of upwardly-increasing diameter which is located above said blast-pipe and is entered by said chimney-base, and a chimney-cone of upwardly-decreasing diameter and located partly within said spark-arrester and partly within said chimney-base, said spark-arrester and said chimney-base both having their peripheries formed by wire or rod spirally wound in the same direction.

8.. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, atube-like spark-arrester which is of upwardly-increasing diameter, is located above said blast-pipe, and is entered by said chimney-base and which is composed of upper and lower rings, notched or recessed bars connecting said rings together, Wire or rod wound spirally around and within the said notches or recesses of the said bars, and a chimney-cone which is of upwardly-decreasing diameter, is located partly within said spark-arrester and partly within said chimney-base, and is composed of a framework comprising notched or recessed bars and wire or rod wound spirally around its said notched or recessed bars and within the notches or recesses thereof.

9. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester of upwardly-increasin g diame ter which is located above said blast-pipe and is entered by said chimney-base, and a chimney-cone of upwardlydecrea sing diameter, located partly within said spark-arrester and partly within said chimney-base, said arrester and said chimney-cone both having radially and outwardly slightly upwardly inclined external surfaces and intervening openings or passages.

10. In a locomotive-engine, a chimney-cone eesses thereof.

11. In a locomotive-engine, achimney-cone composed of a framework comprising an upper ring, a lower ring, notched or recessed bars connecting said rings together, and wire or rod wound spirally around said bars and within the notches or recesses thereof.

12. In alocomotive-engine, the combination of a blast-pipe, a blowerring supported by said blast-pipe, a spark-arrester supported by said blower-ring, and one or more hook or wing bolts adapted to secure said arrester to said blast pipe by overlapping one or more parts of said arrester and to liberate said arrester on being turned about its or their axis or axes.

13. In a loco1notive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and is entered by said chimneybase, a chimneycone located partly within said sparkarrester and, partly within said chimney-base, and one or more hook or wing bolts adapted to secure said arrester to said blast-pipe by overlapping one or more parts of said arrester and to liberate said arrester on being turned about its or their axis or axes.

. 14:. In a locomotive'engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and is entered by said chimneybase, and one or more hook or wing bolts adapted to secure said arrester to said blastpipe by overlapping one or more parts of said arrester and to liberate said arrester on being turned about its or their axis or axes.

15. In alocomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and is entered by said chimneybase, and a blower-ring supported by said blast-pipe and supportingsaid spark-arrester.

16. In alocomotive-engine,the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and is entered by said chimneybase, a blower-ring supported by said blastpipe and supporting said spark-arrester, and one or more hook or wing bolts adapted to secure said arrester to said blast-pipe by overlapping one or more parts of said arrester and to liberate said arrester on being turned about its or their axis or axes.

17 In alocomotive-engine,the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and is entered by said chimneybase, a chimney-cone located partly within said spark-arrester and partly within said chimney-base, a blower-ring supported by said blastpipe and supporting said sparkarrester, and one or more hook or wing bolts adapted to secure said arrester to said blast pipe by overlapping one or more parts of said arrester and to liberate said arrester on being turned about its or their axis or axes.

1 S. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and is entered by said chimneybase, a blower-ring supported by said blastpipe and supporting said sparkarrester, a chimneycone located part-1y Within said spark arrester and partly within said chimney-base, flanges projecting from said blastpipe and blower-ring, and one or more hook or wing bolts extending through said flanges and adapted to secure said arrester to said blower-ring and said blast-pipe by overlapping one or more parts of said arrester and to liberate said arrester on being turned about its or their axis or axes.

19. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is located above said blast-pipe and is entered by said chimneybase, a blower-ring supported by said blastpipe and supporting said spark arrester, flanges projecting from said blast-pipe and blower-ring, and one or more hook or wing bolts extending through said flanges and adapted to secure said arrester to said blowerring and said blast-pipe by overlapping one or more parts of said arrester and to liberate said arrester on being turned about its or their axis or axes.

20. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arresterwhich is of upwardly-increas ing diameter, is located above said blast-pipe, and is entered by said chimney-base and which is composed of upper and lower rings, notched or recessed bars connecting said rings together, wire or red wound spirally around and within the notches or recesses of said bars, a blower-ring supported by said blastpipe and supporting said spark arrester, flanges projecting from said blast-pipe and from said blower-ring, a chimney-cone which is of upwardly-dccreasing diameter, is located partly within said spark-arrester and partly within said chimney-base, and is composed of a framework comprising notched or recessed bars and wire or rod wound spirally around its said notched or recessed bars and within the notches or recesses thereof, and one or more hook or wing bolts extending through said flanges and adapted to secure said arrester to said blower-ring and said blast-pipe by overlapping one or more parts of said arrester and to liberate said arrester 011 being turned about its or their axis or axes.

21. In alocomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like spark-arrester which is of upwardly-increasing diameter, is located above said blast-pipe, and is entered by said chimney-base and which is composed of upper and lowerrings,

notched or recessed bars connecting said rings together, Wire or rod wound spirally around and Within the notches or recesses of the bars, a bloWer-rin g: supported by said blast-pipe and supporting said spark-arrester, flanges projecting from said blast-pipe and from said blower-ring, and one or more hook or Wing bolts extending, through said flanges and adapted to secure said arrester to said blowerring and said blast-pipe by overlapping one or more parts of said arrester an d to liberate said arrester on being turned about its or their axis or axes.

22. In a locomotive-engine, the combination of a blast-pipe, a chimney-base, a tube-like 

